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Publication of SU6729A1publicationCriticalpatent/SU6729A1/ru
Application filed by А.А. ГузеевfiledCriticalА.А. Гузеев
Priority to SU5636ApriorityCriticalpatent/SU68293A1/ru
Publication of SU68293A1publicationCriticalpatent/SU68293A1/ru